Sony SLV-ED8ME, SLV-ED8ML, SLV-EZ8AS Service Manual

SLV-ED8ME/ED8ML/EZ8AS/

EZ8NZ/EZ9AS

RMT-V243/V245

SERVICE MANUAL

Photo: SLV-ED8ML

• Refer to the SERVICE MANUAL of VHS MECHANICAL ADJUSTMENTS VI for MECHANICAL ADJUSTMENTS. (9-921-647-11)

* The abbreviations of ED8, EZ8 and EZ9 contained in this service manual are

indicated when these models are common to all their corresponding models as given below.

Abbreviated model name

All model

names

SLV-

ED8

ED8ME ED8ML

EZ8

EZ8AS EZ8NZ

EZ9

EZ9AS

Australian Model

SLV-EZ8AS/EZ9AS

E Model

SLV-ED8ML

ME Model

SLV-ED8ME

NewZealand Model

SLV-EZ8NZ

S MECHANISM

System

Color system

ED8:

PAL, MESECAM, NTSC 3.58, NTSC 4.43

EZ8/EZ9:

PAL, NTSC 4.43

TV system

ED8:

B/G, D/K, I

EZ8/EZ9

B/G

Channel coverage

ED8:

B/G: VHF E2 to E12/UHF E21 to E69/ CATV S01 to S05, S1 to S41 D/K: VHF R1 to R12, UHF R21 to R69 I: VHF SA4 to SA13/UHF B21 to B69/ CATV S01 to S05, S1 to S41 M: VHF A2 to A13/UHF A14 to A69/ CATV A-8 to A1, A to W, W+1 to W+84

EZ8AS/EZ9AS:

VHF AS0 to AS12, AS5A, AS9A UHF AS28 to AS69 CATV S01 to S05, S1 to S41

SPECIFICATIONS

EZ8NZ:

VHF NZ1 to NZ11 UHF E21 to E69 CATV S01 to S05, S1 to S41

Stereo system

ED8/EZ8NZ: NICAM STEREO: B/G, I ZWEITON German stereo: B/G ED8AS/EZ9AS: ZWEITON German stereo: B/G

RF output signal

ED8/EZ8NZ: UHF channels 21 to 69 EZ8AS/EZ9AS: UHF channels 28 to 69

Aerial out

75-ohm asymmetrical aerial socket

Inputs and outputs

LINE-1, 2-IN

VIDEO IN, phono jack (1) Input signal: 1 Vp-p, 75 ohms, unbalanced, sync negative AUDIO IN, phono jack (2) Input level: 327 mVrms Input impedance: more than 47 kilohms

LINE-3 IN (SAT IN) (ED8, EZ9)

VIDEO IN, phono jack (1) Input signal: 1Vp-p, 75 ohms, unbalanced, sync negative AUDIO IN, phono jack (2) Input level: 327mVrms Input impedance: more than 47 kilohms

– Continued on next page –

VIDEO CASSETTE RECORDER

MICROFILM

LINE –1 OUT

VIDEO OUT, phono jack (1) Output signal: 1 Vp-p, 75 ohms, unbalanced, sync negative AUDIO OUT, phono jack (2) Standard output: 327 mVrms Load impedance; 47 kilohms Output impedance: less than 10 kilohms

LINE –2 OUT (AUDIO)

AUDIO OUT, phono jack (2) Standard output: 327 mVrms Load impedance; 47 kilohms Output impedance: less than 10 kilohms

SKY TV DECODER (EZ8NZ)

VIDEO IN, phono jack (1) Input signal: 1 Vp-p, 75 ohms, unbalanced, sync negative VIDEO OUT, phono jack (1) Output signal: 1 Vp-p, 75 ohms, unbalanced, sync negative

General

Power requirements

110 – 240 V AC, 50/60 Hz (ED8) 220-240 V AC, 50 Hz (EZ8/EZ9)

Power consumption

22W (ED8) 23W (EZ8/EZ9)

Operating temperature

5 ˚C to 40 ˚C

Storage temperature

–20 ˚C to 60 ˚C

Dimensions

Approx. 430 × 100 × 286 mm (w/h/d): including projecting parts and controls

Mass

Approx. 5.7 kg: (ED8) Approx. 5.9 kg: (EZ8/EZ9)

Supplied accessories

Remote commander (1) R6 (size AA) batteries (2) Aerial cable (1) Plug adaptor (1) (ED8) Audio/Video cable (3-phono to 3-phono) (1)

Design and specifications are subject to change without notice.

• Feature Difference SLV- ED8 EZ8 EZ8 EZ9

FEATURE AS NZ AS

ME-SECAM (REC/PB) ®/®G/GG/GG/G ADDITIONAL REAR INPUT (SAT IN) ®GG® SKY TV DECODER IN/OUT G/GG/G®/®G/G MODULATOR SYSTEM G,K,I,M G G G CLICK/JOG SHUTTLE (REMOTE COMMANDER) G/GG/GG/G®/® REMOTE COMMANDER RMT- V245 V245 V245 V243

SAFETY CHECK-OUT

After correcting the original service problem, perform the following safety checks before releasing the set to the customer:

1. Check the area of your repair for unsoldered or poorly-sol-

dered connections. Check the entire board surface for solder splashes and bridges.

2. Check the interboard wiring to ensure that no wires are

“pinched” or contact high-wattage resistors.

3. Look for unauthorized replacement parts, particularly transis-

tors, that were installed during a previous repair. Point them out to the customer and recommend their replacement.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

4. Look for parts which, though functioning, show obvious signs of deterioration. Point them out to the customer and recommend their replacement.

5. Check the B+ voltage to see it is at the values specified.

– 2 –

TABLE OF CONTENTS

Section Title Page Section Title Page

Feature Difference ................................................................... 2

SERVICE NOTE...................................................................... 4

1. GENERAL

Getting Started .............................................................. 1-1

Basic Operations ........................................................... 1-9

Additional Operations.................................................... 1-13

Editing............................................................................ 1-15

Additional Information ................................................... 1-16

2. DISASSEMBLY

2-1. Upper Case Removal.................................................... 2-1

2-2. RJ-79, NK-11 Board Removal....................................... 2-1

2-3. Rear Panel Removal ..................................................... 2-1

2-4. Front Panel Section Removal ....................................... 2-1

2-5. FR-137, DM-77, SW-307, IO-64 Board

Removal (EZ9) .............................................................. 2-2

2-6. Control Switch Block Removal (EZ9) ........................... 2-2

2-7. FR-137, DM-77, IO-64 Board Removal (ED8/EZ8)...... 2-2

2-8. Mechanism Deck Removal ........................................... 2-2

2-9. Power Block Removal ................................................... 2-3

2-10. PS-414, MA-325 board Removal .................................. 2-3

2-11. Internal Views................................................................ 2-4

2-12. Circuit Boards Location ................................................. 2-5

3. BLOCK DIAGRAMS

3-1. Overall Block Diagram .................................................. 3-1

3-2. Video1 Block Diagram ................................................... 3-4

3-3. Video2 Block Diagram ................................................... 3-5

3-4. Servo/System control Block Diagram ........................... 3-7

3-5. Audio Block Diagram..................................................... 3-9

3-6. Tuner Block Diagram ..................................................... 3-11

3-7. Mode Control Block Diagram ........................................ 3-13

3-8. Power Block Diagram.................................................... 3-15

4. PRINTED WIRING BOARDS AND

SCHEMATIC DIAGRAMS

4-1. Frame Schematic Diagram ........................................... 4-3

4-2. Printed Wiring Boards and Schematic Diagrams ......... 4-5

MA-325 (Head Amp) Schematic Diagram .................... 4-5

MA-325 Printed Wiring Board ....................................... 4-9

MA-325 (Video, Audio) Schematic Diagram................. 4-11

MA-325 (System Control) Schematic Diagram ............ 4-15

MA-325 (Servo Control) Schematic Diagram ............... 4-17

MA-325 (Bias, CTL) Schematic Diagram ..................... 4-19

MA-325 (Hi-Fi Audio) Schematic Diagram .................... 4-21

MA-325 (OSD) Schematic Diagram.............................. 4-23

MA-325 (IO) Schematic Diagram.................................. 4-25

MA-325 (Tuner) Schematic Diagram ............................ 4-27

IO-64 Printed Wiring Board and

Schematic Diagram ....................................................... 4-30

RJ-79 Printed Wiring Board and Schematic Diagram .. 4-31

NK-11 Printed Wiring Board and

Schematic Diagram ....................................................... 4-33

DM-77 Printed Wiring Board and

Schematic Diagram ....................................................... 4-35

FR-137, SW-307 Printed Wiring Boards....................... 4-37

FR-137, SW-307 Schematic Diagram .......................... 4-39

PS-414 Printed Wiring Board........................................ 4-41

PS-414 Schematic Diagram.......................................... 4-43

SR-718 Printed Wiring Board ....................................... 4-45

SR-718 Schematic Diagram ......................................... 4-47

5. INTERFACE, IC PIN FUNCTION DESCRIPTION

5-1. System Control-Video Block Interface

(MA-325 board IC161) .................................................. 5-1

5-2. System Control-Servo Peripheral Circuit Interface

(MA-325 board IC161) .................................................. 5-1

5-3. System Control-Mechanism Interface

(MA-325 board IC161) .................................................. 5-2

5-4. System Control-System Control Peripheral Circuit

Interface (MA-325 board IC161) ................................... 5-3

5-5. System Control-Hi-Fi Audio Block Interface

(MA-325 board IC161) .................................................. 5-3

5-6. Servo/System Control Microprocessor Pin Function

(MA-325 board IC161) .................................................. 5-4

5-7. Timer/Tuner Control Microprocessor Pin Function

(FR-137 board IC301) ................................................... 5-5

5-8. Nicam Processor Pin Function

(NK-11 board IC1) ......................................................... 5-6

6. ERROR CODE.......................................................... 6-1

7. ADJUSTMENTS

7-1. Mechanical Adjustments ............................................... 7-1

7-2. Electrical Adjustments ................................................... 7-1

2-1. Pre-Adjustment Preparations........................................ 7-1

2-1-1. Instruments to be Used............................................ 7-1

2-1-2. Connection ............................................................... 7-1

2-1-3. Set-up of Adjustment................................................ 7-1

2-1-4. Alignment Tape......................................................... 7-1

2-1-5. Specified I/O Level and Impedance......................... 7-1

2-1-6. Adjusting Sequence ................................................. 7-2

2-2. Power Supply Adjustment............................................. 7-2

2-2-1. Power Supply Check................................................ 7-2

2-2-2. +6V Adjustment ........................................................ 7-2

2-3. Servo System Adjustment ............................................. 7-2

2-3-1. RF Switching Position Adjustment........................... 7-2

2-4. Audio System Adjustments ........................................... 7-3

2-4-1. Hi-Fi Audio System Adjustment ............................... 7-3

1. AF Switching Position Adjustment........................... 7-3

2. Frequency Response Check.................................... 7-3

3. Overall Level Characteristic and

Distortion Factor Check ........................................... 7-4

4. Overall S/N Check.................................................... 7-4

2-4-2. Normal Audio System Adjustment ........................... 7-4

1. ACE Head Adjustment ............................................. 7-4

2. E-E Output Level Check .......................................... 7-4

3. Frequency Responce Check.................................... 7-4

4. Overall Level Characteristic and Distortion

Factor Check ............................................................ 7-5

5. Overall S/N Check.................................................... 7-5

2-5. Video System Adjustment ............................................. 7-5

2-5-1. VCO Oscillation Frequency Adjustment .................. 7-5

2-6. Parts Arrangement Diagram for Adjustments............... 7-6

8. REPAIR PARTS LIST

8-1. Exploded Views ............................................................. 8-1

8-1-1. Front Panel and Cabinet Assemblies

(ED8/EZ8) ................................................................ 8 -1

8-1-2. Front panel and Cabinet Assemblies

(EZ9)......................................................................... 8-2

8-1-3. Chassis Assembly .................................................... 8-3

8-1-4. Mechanism Chassis Assembly (1)........................... 8-4

8-1-5. Mechanism Chassis Assembly (2)........................... 8-5

8-1-6. Mechanism Chassis Assembly (3)........................... 8-6

8-2. Electrical Parts List........................................................ 8-7

– 3 –

SERVICE NOTE

1. DISASSEMBLY

• This set can be disassembled in the order shown below.

Note: Pages in indicated pages in the SERVICE MANUAL.

Pages in indicated pages in the VHS MECHANICAL ADJUSTMENT MANUAL VI.

Set

Upper case (Page 2-1)

Front Panel

Section

(Page 2-1)

FR-137 Board

(Page 2-2)

IO-64 Board

(Page 2-2)

Control Switch

Block (EZ9)

(Page 2-2)

RJ-79 Board

(Page 2-1)

DM-77 Board

(Page 2-2)

SW-307 Board

(EZ9)

(Page 2-2)

Cam Gear

(Page 23)

NK-11 Board (ED8/EZ8NZ)

(Page 2-1)

FL complete

Ass’y

(Page 13)

Retainer

Plate

(Page 22)

FL Slider

Block Ass’y

(Page 22)

Cam Motor

Retainer

(Page 31)

Pinch Press

Block Ass’y

(Page 14)

Mechanism

Deck

(Page 2-2)

Rubber

Belt

(Page 15)

Pully Gear

Ass’y

(Page 29)

Reel Direct

Ass’y

(Page 30)

Rear Panel

(Page 2-1)

Rubber

Belt

(Page 15)

Capstan

Motor

(Page 15)

Power

Block

(Page 2-3)

MA-325 Board

(Page 2-3)

Rotary Switch

(Page 2-2)

Ground Shaft

Ass’y

(Page 13)

Drum Ass’y

(Page 13)

PS-414 Board

(Page 2-3)

Tuner

Unit

Rubber

Belt

(Page 15)

Slider

(Page 26)

Gear (T, S)

(Page 28)

Cam Motor

(Page 31)

– 4 –

SECTION 1

GENERAL

SLV-ED8/EZ8/EZ9

This section is extracted from SLV ED8ME/ML instruction manual.

1-1

1-2

1-3

1-4

1-5

1-6

1-7

1-8

1-9

1-10

1-11

1-12

1-13

1-14

1-15

1-16

1-17

1-17 (E)

SLV-ED8/EZ8/EZ9

3 Harness

5 Two claws

4 Three claws

6 Claw

7 Claw

8 Rear panel

2 Connector

(CN361)

1 Two connectors

(CN101, 901)

SECTION 2

DISASSEMBLY

Note: Follow the disassembly procedure in the numerical order given.

2-1. UPPER CASE REMOVAL 2-3. REAR PANEL REMOVAL

3 Upper case

1 Two tapping screws

2 Two tapping screws

2-2. RJ-79, NK-11 BOARD REMOVAL

1 Two connectors

3 RJ-79 board

5 NK-11 board

(ED8/EZ8NZ)

4 Connector

(CN751)

(CN951, 952)

2 Four screws

(BVTP3 × 12)

2-4. FRONT PANEL SECTION REMOVAL

1 Connector

(CN423)

2 Flat cable

(CN105)

3 Two claws

4 Claw

6 Front panel section

5 Three claws

2-1

2-5. FR-137, DM-77, SW-307, IO-64 BOARD

REMOVAL (EZ9)

2-7. FR-137, DM-77, IO-64 BOARD

REMOVAL (ED8/EZ8)

!¡ SW-307 board

0 Two screws

5 Flat cable

(CN308)

4 FR-137 board

(B2.6 × 8)

3 Four screws

(B2.6 × 8)

1 Flat cable

!™ IO-64

board

6 Flexible board

(CN302)

9 Flexible board

(CN451)

7 Four screws

(B2.6 × 8)

2 Screw

(B2.6 × 8)

(CN309)

8 DM-77 board

2-6. CONTROL SWITCH BLOCK REMOVAL

(EZ9)

3 FR-137 board

7 Screw

(B2.6 × 8)

8 IO-64 board

6 DM-77 board

5 Connector

(CN307)

4 Flexible board

(CN451)

2-8. MECHANISM DECK REMOVAL

1 Nine screws

(B2.6 × 8)

2 Four screws

(B2.6 × 8)

2 Damper holder

5 Control switch block

1 Two screws

(B2.6 × 8)

4 Fulcrum plate

(right) assembly

3 Screw

(B2.6 × 8)

2 Connector

3 Connector

(FE head)

6 Two screws

(BVTP3 × 12)

7 Mechanism deck

4 Screw

(B3)

Note: When mounting the mechanism deck,

first align ¢ mark on the rotary switch.

(ACE head)

5 Screw

(BVTP3 × 12)

1 Flexible board

2-2

2-9. POWER BLOCK REMOVAL

1 Power cord

2 Two screws

(B3)

3 Power block

2-10. PS-414, MA-325 BOARD REMOVAL

5 Three screws

(B3)

6 MA-325 board

4 Screw

1 Connector

(CN162)

2 Three screws

(B3)

3 PS-414 board

2-3

2-11. INTERNAL VIEWS

Drum assembly (M901) (DZH-95A/Z-RP) 8-839-045-02

FE head 1-500-144-11

Q100 Tape end sensor 8-729-043-84

M902 Capstan motor 1-698-971-11

Q101 Tape top sensor 8-729-043-84

D102 Tape top/end LED 8-719-048-26

Drum assembly (M901) (DZH-95A/Z-RP) 8-839-045-02

M903 Cam motor assembly X-3947-577-1

2-4

2-12. CIRCUIT BOARDS LOCATION

MA-325

VIDEO, AUDIO, I/O,

(

SERVO/SYSTEM CONTROL, TUNER

RJ-79

)

(ADDITIONAL REAR IN/OUT)

NK-11 (ED8, EZ8NZ) (NICAM)

SW-307 (EZ9) (POWER SWITCH)

IO-64 (FRONT IN)

FR-137

FL DRIVE,

(

MODE CONTROL

)

DM-77 (MODE CONTROL)

POWER BLOCK (SR-718) (SWITCHING REGULATOR)

PS414 (POWER SUPPLY)

2-5 E

2-5

SECTION 3

BLOCK DIAGRAM

SLV-ED8/EZ8/EZ9

3-1. OVERALL BLOCK DIAGRAM

MA-325 BOARD

(SEE PAGE 4-5~4-27)

REC/PB

AUDIO REC/PB

IC071

T081

BIAS

OSC

T091

BIAS

OSC

CNJ901

L1 IN V L1 IN L L1 IN R

IO-64 BOARD

(SEE PAGE 4-30)

CNJ480

L2 IN V L2 IN L L2 IN R

CNJ952

L3 IN V L3 IN L L3 IN R

GND

IC501

VIDEO

AMP

IC340

AMP

NA HEAD PB

SWITCH

BIAS VCC

BUFFER

IC901

RJ-79 BOARD (1/3)

(SEE PAGE 4-30)

BUFFER

IC961

PS-414 BOARD

(SEE PAGE 4-43) 35V 13V

Q601

IC600

Q603

Q602

–13V

REC RF, PB RF, CROT

COMP SYNC

RF ENV, RF SWP

SCK, SO

AF RECP, AF RFC, FULL ERASE AF SWP AFM REC, PB AFM

NA REC

L1 IN L L1 IN R

Q600

SWITCH

12V REC

SWITCH

AUDIO HEAD

ERASE HEAD

AC 110~240V

SP CH1

SP CH2

EP CH1

EP CH2

MONO

AUDIO

FULL

CH1

CH2

VIDEO

HEAD

Hi-Fi

AUDIO HEAD

LINE 1 IN

VIDEO AUDIO L AUDIO R

LINE 2 IN

VIDEO AUDIO L AUDIO R

ED8/EZ9

LINE 3 IN

(SAT IN)

VIDEO AUDIO L AUDIO R

POWER

BLOCK

SR-718

IC201

AUDIO

PROCESSOR

(MONO)

SAT L SAT R

(1/2)

NORMAL AU NA HF OUT A MUTE FULL ERASE

POWER CONT

UN30V UN13V

MTR12V

UN12V

SW5V

D6V

–13V

GND

EZ8NZ

Q300

LED

LINE-1 OUT

VIDEO AUDIO L AUDIO R

LINE-2 OUT

AUDIO L AUDIO R

TA MUTE

HDET, CGV, CG CS

SCK, SI, SO

POWER CONT

AERIAL OUT

BUFFER

Q901

L OUT, R OUT

EZ8AS/EZ9

TA MUTE

A/D2

SIRCS IN

A/D6, 7

LED CS

A/D0, 1

DMS1, 2

SAT DEC

TU701:ED8

TU702:EZ8/EZ9 AERIAL IN

MOD V

PROCESSOR

ED8/EZ8NZ

IC301

TIMER/TUNER/

MODE

CONTROL

CNJ901

IC201

(2/2)

VIDEO OUT

IC202

Y/C

PROCESSOR

IC360

AUDIO

PROCESSOR

(Hi-Fi)

–F +F

CCD TV VIDEO QVD, NT JUDGE, MESECAM DET

IIC CLK, IIC DATA

LINE OUT L, LINE OUT R MOD A TUNER M

TUNER L TUNER R

CLIK

SHUTTLE

IC401

OSD

CGV, HDET, CG CS

SCK, SI

EZ9

SW-307 BOARD

(SEE PAGE 4-39)

DM-77 BOARD

(SEE PAGE 4-35)

OSD V

FR-137 BOARD

(SEE PAGE 4-39)

POWER

OPERATING

SWITCH BLOCK

JOG

DRIVER

FUNCTION

SWITCH

FUNCTION

SWITCH

Q400

LED

DRIVER

IC400

REMOTE CONTROL RECEIVER

LED

LINE OUT L

LINE OUT R

ED8/EZ9

IC203

RJ-79 BOARD (2/3)

(SEE PAGE 4-31)

CNJ953

TV VIDEO

VIDEO

SELECTOR

L3 IN V

Q750, Q753

Q751-Q753

ED8/EZ8

POWER

DEC IN

INSEL 1

MUTE

FUNCTION

SWITCH

DRIVER

REMOTE

CONTROL

RECEIVER

FUNCTION

SWITCH

RJ-79 BOARD (3/3)

(SEE PAGE 4-31)

CNJ954

DEC IN

OUT

MPX

IC750

L OUT, R OUT

DEC OUT

TUNER/MODURATOR

VIDEO

PROCESSOR

NK-11 BOARD

(SEE PAGE 4-33)

SDA0, SCL0

PLL DATA, PLL CLK, PLL ENABLE, AFT, FMONO, SAP

ASURA CS, ASURA RESET

POWER FAIL

RESET

BUZZER

G1-G3 SEG1-6

Q901

BUFFER

SDA0,SCL0

PLL DATA, PLL CLK, PL ENABLE, AFT, SAP,

AUDIO

MOD A

NICAM

IC303

EEP

ROM

RESET PULS GENERATOR

FLUORESCENT

FMONO

EZ8NZ

BUFFER

INSEL1

AF RECP, AF RFC, FULL ERASE

IC302

BZ201

ND320

INDICATOR

TUBE

IC702

IIC CLK, IIC DATA

COMP SYNC

RF ENV, RF SWP

SCK, SO

AF SWP A MUTE

TV/VTR

IC161

SERVO/SYSTEM

CONTROL

D FG

D PG

DRM DA

CAP FG

CAP DA CAP STOP CAP RVS, CAP TRQ PWM

CAM

MODE1-4

T/S LED

T SENS

S SENS

T REEL FG

S REEL FG

REC PRE

NT PB SW

PB CTL, REC CTL

CTL RESET

CTL HYS HIGH

IC101

IC130

CAM MOTOR

DRIVER

S100

ROTARY SWITCH

Q111

LED

DRIVER

REC PRE

S151

SWITCH

(1/2)

AMP

(2/2)

AMP

Q101

T SENS

Q101

S SENS

PH100 T REEL

SENS

PH101 S REEL

SENS

S101

IC001, IC021

CTL AMP

Q001 GAIN

D VS

CAP VS

NTSC PB

SWITCH

D102

M901

DRUM MOTOR

DRUM FG

DRUM PG

M902

CAPSTAN MOTOR

CAP FG

M903

CAM MOTOR

CTL HEAD

3-1 3-2

+ 60 hidden pages